Sherlock Sam and the Cloaked Classmate in Macritchie #6

Description

Sherlock Sam encounters his most important mystery yet! His classmate has gone missing at MacRitchie Reservoir, and no one can find him. Fearing the worst, Officer Siva refuses to let the Supper Club help, but there’s never been a mystery Sherlock, Watson and their friends could ignore!
This is the first book in the Fiendish Mastermind Trilogy!